S<span>cientists make changes in experiments to see if those changes will cause an effect in something they observe</span>
<span>the basic needs for all cells in the body is to have food, oxygen, have their wastes taken away and to not have body conditions change to much.</span>
For hypotheses start off with "if students read more then there achievements will go up/ then there achievements will remain the same. For analyzing data collect data for the experiment and state if weather or not it supported your hypothesis. For conducting the experiment and conclusion make sure your results from the experiment are restarted in the conclusion
"For both ectotherms and endotherms, metabolic rate tends to increase as mass increases"
That's the answer : )